Dover
Delaware, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Dover, DE

The public Archives building in Dover, Delaware, between two large trees
The public Archives building in Dover, Delaware, between two large trees
The last month of the spring, May, is an agreeable month in Dover, Delaware, with average temperature ranging between min 56.7°F (13.7°C) and max 70.7°F (21.5°C).

Temperature

In Dover, the average high-temperature rises, from a comfortable 61°F (16.1°C) in April, to a pleasant 70.7°F (21.5°C). In Dover, the average low-temperature is 56.7°F (13.7°C).

Humidity

The most humid month in Dover is May, with an average relative humidity of 79%.

Rainfall

In Dover, it is raining for 15.6 days, with typically 2.4" (61mm) of accumulated precipitation. In Dover, during the entire year, the rain falls for 152.3 days and collects up to 26.3" (668mm) of precipitation.

Snowfall

In Dover snow does not fall in April through November.

Daylight

In Dover, the average length of the day is 14.3h.

Sunshine

In Dover, the average sunshine is 8.9h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Dover. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Dover?

In May, in Dover, the average high-temperature is 70.7°F (21.5°C), and the average low-temperature is 56.7°F (13.7°C).

What is the most humid month in Dover?

The most humid month in Dover, Delaware, is May, with an average relative humidity of 79%.

What is the average humidity in May in Dover?

In May, the average relative humidity is 79%.

How much does it rain in Dover in May?

In Dover, Delaware, in May, during 15.6 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

When it does not snow in Dover?

In Dover, Delaware, snow does not fall in April through November.

How many hours of daylight does Dover have in May?

In May, the average length of the day is 14.3h.

How long on average sun shines in May in Dover?

In May, the average sunshine in Dover, Delaware, is 8.9h.

What are the months with the highest UV index in Dover?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Dover.

What is the UV index reading in May in Dover?

The average daily maximum UV index in May in Dover, Delaware, is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in May - Dover, DE
  • Average high temperature in May: 21.5°C

The warmest month (with the highest average high temperature) is July (29°C).
The month with the lowest average high temperature is January (4.3°C).

  • Average low temperature in May: 13.7°C

The month with the highest average low temperature is July (21.1°C).
The coldest month (with the lowest average low temperature) is January (-1.8°C).

Average humidity in May - Dover, DE
  • Average humidity in May: 79%

The month with the highest relative humidity is May (79%).
Months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in May - Dover, DE
  • Average rainfall in May: 61mm

The wettest month (with the highest rainfall) is August (80mm).
The driest month (with the lowest rainfall) is January (37mm).

Average rainfall days in May - Dover, DE
  • Average rainfall days in May: 15.6 days

The month with the highest number of rainy days is July (17.6 days).
The month with the lowest number of rainy days is November (8.1 days).

Average snowfall in May - Dover, DE
  • Average snowfall in May: 0mm

The month with the highest snowfall is January (42mm).
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in May - Dover, DE
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (3.5 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in May / Average sunshine in May - Dover, DE
  • Average daylight in May: 14.3h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in May: 8.9h

The month with most sunshine is July (Average sunshine: 10.8h).
The month with least sunshine is February (Average sunshine: 5h).

Average UV index in May - Dover, DE
  • Average UV index in May: 6

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).